St. Louis HVAC, Plumbing & Electrical | GMB Mechanical Contracting

Absolutely. Uneven cooling is often caused by ductwork issues, an undersized unit, or a lack of zoning. Our HVAC experts will perform a thorough inspection of your system, check for blocked vents or leaks in your ducts, and assess your home's layout. We can provide solutions ranging from duct sealing and balancing to installing a zoning system or recommending a correctly sized HVAC replacement to ensure every room in your house stays comfortable.

Yes, we frequently troubleshoot smart thermostat compatibility and wiring issues. The problem could be with the thermostat's setup, a faulty C-wire (common wire) for power, or an incompatibility with your existing HVAC equipment. Our electricians and HVAC technicians will diagnose the root cause, whether it requires a new wiring installation, a circuit check at your electric panel, or a thermostat replacement, to restore your system's smart functionality and efficiency.

Our preventative HVAC maintenance is designed to catch small issues before they become major repairs or cause comfort problems like uneven temperatures. A typical visit includes cleaning coils and components, checking refrigerant levels, inspecting electrical connections at the panel and unit, testing thermostat calibration, lubricating moving parts, and ensuring safe operation of gas lines (if applicable). This service helps your system run efficiently, extends its lifespan, and maintains consistent comfort throughout your home.